Poison spraying machine



March 12, 1940. Kosm 2,193,285

POISON SPRAYING MACHINE Fileq Feb. 25, 1939 2 Sheets-Sheet l Inventor 6607295 .Kosz k Patented Mar. 12, 1940 nitr te stares enTENr ()FFlCE POISON SPRAYING IYIACHINE Charles Kosik, Tavener, Tex., assignor of one-half to Jesse JamesDuckett, El Camp, Tex.

Application February 23, 1939, Serial No. 258,107 1 Claim. (01. 259-95) The present invention relates to new and useful improvements in poison spraying machines and has for oneof its important objects to provide, in a manner as hereinafter set forth; a device of this character comprising pumping means of a novel construction and arrangement for discharging the poison under pressure.

Another very important object of the invention is to provide amachine of the aforementioned character comprising unique means for keeping the poison composition thoroughly mixed while the machine is in operation.

Still another important object of the invention is to provide a poisonspraying machine which is adapted to be mounted for operation on a conventional tractor and driven from the usual power take-off thereof.

Other objects of the invention are to provide a poison spraying machine of the character described which will becomparatively simple in construction, strong, durable, highly eflicient and reliable in use, compact and which may be manufactured at low cost.

All of the foregoing and still further objects andadvantages of the invention will become apparent from a study ofthe following specification, taken in connection with the accompanying drawings wherein like characters of refence designate corresponding parts throughout the several views, and wherein:

Figure 1 is an elevational view of a poison spraying machine constructed in accordance with the present invention.

Figure 2 is a top plan view thereof.

Figure 3 is a vertical sectional view through the machine, showing the gears of the pump exposed.

Figure lisa view in vertical section through the lower portion of the delivery pipe.

Figure 5 is a view in horizontal section, taken substantially on the line 55 of Fig. 4.

Figure 6 is a horizontal sectional View, taken substantially on the line 66 of Fig. 4.

Figure '7 is a vertical sectional view through the return pipe.

Figure 8 is a horizontal sectional view, taken substantially. on the line 8-8 of Fig. 7.

Referring now to the drawings in detail, it will be seen that the embodiment of the invention which has been illustrated comprises a tank I for the reception of the poison, said tank being of any suitable capacity and material. The top 2 of the tank I is provided with a suitable closure 3 which permits the poison to be placed in said tank. It may be well to here state that the tank I is adapted to be mounted on the rear end portionof a conventional tractor adjacent the power take-ofi thereof.

Mounted on the top 2 of the tank I is a gear type pump 4 which is actuated by a pulley 5. 5 The pulley 5 is to be connected by an endless drive belt to the aforementioned power take-off of the tractor. Of course, any other suitable source of power may be used. Also, the ratio of the pulley 5 relative to the power take-off pulley l0 may be as desired.

Extending downwardly from the pump 4 into the tank Ito a point adjacent the bottom 6 of said tank is a delivery pipe I. As illustrated to a valve. I3. Mounted in the discharge conduit 25 I2 ahead of the valve I3 is a removable plug I4 whichpermits the pump 4 to be primed. Any suitable member and type of spray nozzles may be connected to the discharge conduit I2. Also .communicating with the outlet side of the pump 30 4 is a pressure gauge I5. A cushioning chamber I6 is interposed between the pressure gauge I5 and the pump 4.

Connected to the discharge conduit I2 is a return pipe I I which extends downwardly into 35 the tank I to a point adjacent the bottom 6 thereof. Mounted on the lower end portion of the return pipe I! is a seat I8 of substantially the shape shown to advantage in Fig. 8 of the drawings. The reference numeral I9 designates a control valve for the return pipe ll which is engageable with the seat I8. The valve I9 is mounted on the lower end of the rod 26 which extends vertically through the return pipe I 'I and which is connected to a stem 2! which is threadedly mounted in a T 22 on the upper end of said pipe. The threaded stem 2I is provided with i an operating wheel 23. A packing 24 is provided .for the stem 2! for preventing leakage of the tion is drawn into the lower portion of the pipe I through the screen 9 from a point adjacent the bottom of the tank I. The composition flows upwardly through the pipe-I, being elevated by the gear pump 4, and enters the discharge conduit l2 under pressure. A portion of this composition from the pump 4 flows through the discharge conduit l2 to the nozzle or nozzles. The rest of this poison from the pump 4 is returned to the tank I through the pipe I! and is discharged adjacent the bottom 6 of sai'd tank in a manner tov stir and to thoroughly mix the composition in said tank. Through the medium of arrangement of parts may be resorted to which will fall within the scope of the invention as claimed.

What is claimed is:

A spraying machine comprising a tank for the reception of material to be sprayed, a pump, a pipe connected with the inlet of the pump and extending into the tank to a point adjacent the bottom thereof, a. return pipe extending into the tank from the discharge side of the pump for agitating the material in said tank the lower end of the return pipe having a star-shaped outlet port therein, a valve rod passing through the return pipe with its lower end extending through the port, a disk valve connected to said lower end for closing the port when the rod is raised, said valve being of much larger diameter than that of the port to act as a deflector when the rod is in lowered position to space the valve below the ported end of the return pipe and means at the upper end of the rod for raising and lowering the same.

CHARLES KOSIK. 

